Fig. 18 - Removing Mounting Bolts

TM 5-4240-501-148P CARBURETION Pulsa-Jet, Vacu-Jet (Vertical Crankshaft) 4. To check adjustment move engine control from SLOW to FAST speed. Engine should accelerate smoothly. If engine tends to stall or die out, increase idle speed or re-adjust carburetor, usually to a slightly richer mixture. NOTE: Flooding can occur if the engine is tipped at an angle for a prolonged period of time, if the engine is cranked repeatedly when the spark plug wire is disconnected or if carburetor mixture is adjusted too rich. In case of flooding, move the governor control to the "Stop" position and pull the starter rope at least six times. (Crank electric starter models for at least 5 seconds.) When the control is placed in the "Stop" position the governor spring holds the throttle in a closed (idle) position. Cranking the engine with a closed throttle creates a higher vacuum which opens the choke rapidly, permitting the engine to clear itself of excess fuel. Then move the control to "Fast" position and start engine. If engine continues to flood, lean carburetor needle valve -1/8 to 1/4 turn clockwise or see page 5. If the engine on a mower with a high-inertia disc type cutter blade becomes hard starting when the engine is warm, a leaner carburetor mixture may be required. A heavy, high-inertia disc type cutter blade rotates for a longer period of time, after the governor control is placed in the STOP position. During this "coasting" period, the engine continues to induct the fuel-air mixture, even when the choke is open. If the carburetor mixture is too rich, the warm engine may flood and become hard starting. If the original carburetor adjustment has not been changed, turn the needle valve clockwise (leaner) approximately 1/8 turn. If the original carburetor adjustment has been changed, follow previous adjustment procedure paragraph No. 2 A, B and C, then adjust 1/8 turn leaner. Cleaning Fuel System Gummy or dirty fuel tanks, lines and carburetors should be cleaned in a carburetor cleaner, such as Bendix. Do not soak diaphragms or nylon parts in cleaner. MODEL SERIES 82000, 92000, 94000, 110900 and 111900 only Model Series 82500, 92500 and 94500 have a VacuJet carburetor. Model Series 82900, 92900, 94900, 110900 and 111900 have a Pulsa-Jet carburetor. Remove carburetor and fuel tank assembly mounting bolts, Fig. 18. Fig. 18 - Removing Mounting Bolts Slip carburetor and fuel tank assembly off end of fuel intake tube and turn assembly to free throttle link from throttle lever. This will leave governor link and governor spring connected to the governor blade and control lever, Fig. 19. Fig. 19 - Remove Carburetor and Tank Assembly MODEL SERIES 94000 Disconnect governor spring from control lever. Slide carburetor and fuel tank assembly off end of fuel intake tube and turn assembly to disconnect governor link from bell crank lever. This will leave governor spring and bell crank assembly on carburetor and fuel tank assembly, Fig. 20. 8